package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.time.LocalDateTime;
import java.util.List;

@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        //先将前端传来的密码进行md5加密，然后再和数据库中已经加密的密码库进行比对
        password = DigestUtils.md5DigestAsHex(password.getBytes());

        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    @Override
    public void save(EmployeeDTO dto) {
        Employee employee = new Employee();

        BeanUtils.copyProperties(dto,employee); //对象属性拷贝，将dto的对象属性全部拷贝到员工类中，前提属性名都相同

        //补充员工类基本属性
        //设置员工状态，默认为1
        //调用工具类中的final修饰的常量，避免被修改
        employee.setStatus(StatusConstant.ENABLE);

        //设置密码，密码加密存储到数据库中
        employee.setPassword(DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes()));

       /* //设置修改和创建时间
        employee.setCreateTime(LocalDateTime.now());
        employee.setUpdateTime(LocalDateTime.now());

        //已解决 后期修改为当前登录用户的id
        employee.setUpdateUser(BaseContext.getCurrentId());
        employee.setCreateUser(BaseContext.getCurrentId());*/

        employeeMapper.insert(employee);
    }

    @Override
    public PageResult pagequery(EmployeePageQueryDTO epqd) {

        PageHelper.startPage(epqd.getPage(),epqd.getPageSize());

        Page<Employee> page =  employeeMapper.pagequery(epqd);

        long total = page.getTotal();

        List<Employee> result = page.getResult();

        return new PageResult(total ,result);
    }

    @Override
    public void statusorstop(Integer status, Long id) {
        /*Employee employee = new Employee();
        employee.setId(id);
        employee.setStatus(status);*/

        Employee employee = Employee
                .builder()
                .status(status)
                .id(id)
                .build();
        employeeMapper.update(employee);
    }

    @Override
    public Employee getbyid(Long id) {
        Employee employee = employeeMapper.getbyid(id);
        employee.setPassword("****");
        return employee;
    }

    @Override
    public void update(EmployeeDTO employeedto) {
        Employee employee = new Employee();
        BeanUtils.copyProperties(employeedto ,employee);

        /*employee.setUpdateTime(LocalDateTime.now());  //更改修改时间
        employee.setUpdateUser(BaseContext.getCurrentId());  //更改修改人id*/

        employeeMapper.update(employee);
    }

}
